fly wheel

What’s the go every ones says you must get fly wheel mirror balanced to flex plate why would you keep flex plate if your going manual it makes no sense do people mean you have to get the fly wheel balanced the same as the flex plate or what ??

Hi, Does any1 know how tight the flywheel bolts should be done up on a manual Commodore vs v6. im after the exact specifications if any1 knows it.. cheers